1 from __future__ import with_statement
4 from sfa.util.namespace import *
5 from sfa.util.faults import *
6 from xmlbuilder import XMLBuilder
9 from StringIO import StringIO
13 def __init__(self, node):
15 self.network = node.network
16 self.slice = node.network.slice
20 self.slice.tags_to_xml(xml, self.node)
24 def __init__(self, network, iface):
25 self.network = network
26 self.id = iface['interface_id']
27 self.idtag = "i%s" % self.id
28 self.ipv4 = iface['ip']
29 self.bwlimit = iface['bwlimit']
30 self.hostname = iface['hostname']
33 Just print out bwlimit right now
37 with xml.bw_limit(units="kbps"):
38 xml << str(self.bwlimit / 1000)
42 def __init__(self, network, node, bps = 1000 * 1000000):
43 self.network = network
44 self.id = node['node_id']
45 self.idtag = "n%s" % self.id
46 self.hostname = node['hostname']
47 self.site_id = node['site_id']
48 self.iface_ids = node['interface_ids']
50 self.whitelist = node['slice_ids_whitelist']
54 for id in self.iface_ids:
55 i.append(self.network.lookupIface(id))
56 # Only return the first interface
61 return self.network.lookupSite(self.site_id)
64 self.sliver = Sliver(self)
67 slice = self.network.slice
68 if self.whitelist and not self.sliver:
69 if not slice or slice.id not in self.whitelist:
72 with xml.node(id = self.idtag):
75 if self.network.type == "VINI":
77 xml << str(int(self.bps/1000))
78 for iface in self.get_ifaces():
81 self.sliver.toxml(xml)
85 def __init__(self, network, site):
86 self.network = network
87 self.id = site['site_id']
88 self.idtag = "s%s" % self.id
89 self.node_ids = site['node_ids']
91 self.name = site['abbreviated_name']
92 self.tag = site['login_base']
93 self.public = site['is_public']
94 self.enabled = site['enabled']
96 self.whitelist = False
98 def get_sitenodes(self):
100 for i in self.node_ids:
101 n.append(self.network.lookupNode(i))
104 def toxml(self, xml):
105 if not (self.public and self.enabled and self.node_ids):
107 with xml.site(id = self.idtag):
110 for node in self.get_sitenodes():
115 def __init__(self, network, hrn, slice):
117 self.network = network
118 self.id = slice['slice_id']
119 self.name = slice['name']
120 self.node_ids = set(slice['node_ids'])
121 self.slice_tag_ids = slice['slice_tag_ids']
124 Use with tags that can have more than one instance
126 def get_multi_tag(self, tagname, node = None):
128 for i in self.slice_tag_ids:
129 tag = self.network.lookupSliceTag(i)
130 if tag.tagname == tagname:
131 if not (node and node.id != tag.node_id):
136 Use with tags that have only one instance
138 def get_tag(self, tagname, node = None):
139 for i in self.slice_tag_ids:
140 tag = self.network.lookupSliceTag(i)
141 if tag.tagname == tagname:
142 if (not node) or (node.id == tag.node_id):
148 for id in self.node_ids:
149 n.append(self.network.nodes[id])
152 # Add a new slice tag
153 def add_tag(self, tagname, value, node = None):
154 record = {'slice_tag_id':None, 'slice_id':self.id, 'tagname':tagname, 'value':value}
156 record['node_id'] = node.id
158 record['node_id'] = None
159 tag = Slicetag(record)
160 self.network.tags[tag.id] = tag
161 self.slice_tag_ids.append(tag.id)
166 # Update a slice tag if it exists, else add it
167 def update_tag(self, tagname, value, node = None):
168 tag = self.get_tag(tagname, node)
169 if tag and tag.value == value:
175 tag = self.add_tag(tagname, value, node)
178 def update_multi_tag(self, tagname, value, node = None):
179 tags = self.get_multi_tag(tagname, node)
181 if tag and tag.value == value:
185 tag = self.add_tag(tagname, value, node)
188 def tags_to_xml(self, xml, node = None):
189 tag = self.get_tag("cpu_pct", node)
191 with xml.cpu_percent:
193 tags = self.get_multi_tag("vsys", node)
198 def toxml(self, xml):
199 with xml.sliver_defaults:
200 self.tags_to_xml(xml)
205 def __init__(self, tag):
206 self.id = tag['slice_tag_id']
208 # Make one up for the time being...
209 self.id = Slicetag.newid
211 self.slice_id = tag['slice_id']
212 self.tagname = tag['tagname']
213 self.value = tag['value']
214 self.node_id = tag['node_id']
219 # Mark a tag as deleted
224 def write(self, api):
227 api.plshell.UpdateSliceTag(api.plauth, self.id, self.value)
229 api.plshell.AddSliceTag(api.plauth, self.slice_id,
230 self.tagname, self.value, self.node_id)
231 elif self.deleted and int(self.id) > 0:
232 api.plshell.DeleteSliceTag(api.plauth, self.id)
236 A Network is a compound object consisting of:
237 * a dictionary mapping site IDs to Site objects
238 * a dictionary mapping node IDs to Node objects
239 * a dictionary mapping interface IDs to Iface objects
242 def __init__(self, api, type = "PlanetLab"):
245 self.sites = self.get_sites(api)
246 self.nodes = self.get_nodes(api)
247 self.ifaces = self.get_ifaces(api)
248 self.tags = self.get_slice_tags(api)
251 """ Lookup site based on id or idtag value """
252 def lookupSite(self, id):
254 if isinstance(id, basestring):
255 id = int(id.lstrip('s'))
259 raise KeyError("site ID %s not found" % id)
265 sites.append(self.sites[s])
268 """ Lookup node based on id or idtag value """
269 def lookupNode(self, id):
271 if isinstance(id, basestring):
272 id = int(id.lstrip('n'))
276 raise KeyError("node ID %s not found" % id)
282 nodes.append(self.nodes[n])
285 """ Lookup iface based on id or idtag value """
286 def lookupIface(self, id):
288 if isinstance(id, basestring):
289 id = int(id.lstrip('i'))
291 val = self.ifaces[id]
293 raise KeyError("interface ID %s not found" % id)
298 for i in self.ifaces:
299 ifaces.append(self.ifaces[i])
302 def nodesWithSlivers(self):
310 def lookupSliceTag(self, id):
315 raise KeyError("slicetag ID %s not found" % id)
318 def getSliceTags(self):
321 tags.append(self.tags[t])
325 def __process_attributes(self, element, node=None):
326 for e in element.iterfind("./vsys"):
327 self.slice.update_multi_tag("vsys", e.text, node)
331 Annotate the objects in the Network with information from the RSpec
333 def addRSpec(self, xml, schema=None):
335 for node in self.getNodes():
336 nodedict[node.idtag] = node
340 tree = etree.parse(StringIO(xml))
343 # Validate the incoming request against the RelaxNG schema
344 relaxng_doc = etree.parse(schema)
345 relaxng = etree.RelaxNG(relaxng_doc)
347 if not relaxng(tree):
348 error = relaxng.error_log.last_error
349 message = "%s (line %s)" % (error.message, error.line)
350 raise InvalidRSpec(message)
352 rspec = tree.getroot()
354 defaults = rspec.find("./network/sliver_defaults")
355 self.__process_attributes(defaults)
357 # Find slivers under node elements
358 for sliver in rspec.iterfind("./network/site/node/sliver"):
359 elem = sliver.getparent()
360 node = nodedict[elem.get("id")]
361 slicenodes[node.id] = node
363 self.__process_attributes(sliver, node)
365 # Find slivers that specify nodeid
366 for sliver in rspec.iterfind("./request/sliver[@nodeid]"):
367 node = nodedict[sliver.get("nodeid")]
368 slicenodes[node.id] = node
370 self.__process_attributes(sliver, node)
375 Annotate the objects in the Network with information from the slice
380 raise Error("no slice associated with network")
382 for node in slice.get_nodes():
386 Write any slice tags that have been added or modified back to the DB
388 def updateSliceTags(self):
389 # Update slice tags in database
390 for tag in self.getSliceTags():
391 if tag.slice_id == self.slice.id:
397 Produce XML directly from the topology specification.
400 xml = XMLBuilder(format = True, tab_step = " ")
401 with xml.RSpec(type=self.type):
402 name = "Public_" + self.type
404 element = xml.network(name=name, slice=self.slice.hrn)
406 element = xml.network(name=name)
410 self.slice.toxml(xml)
411 for site in self.getSites():
414 header = '<?xml version="1.0"?>\n'
415 return header + str(xml)
418 Create a dictionary of site objects keyed by site ID
420 def get_sites(self, api):
422 for site in api.plshell.GetSites(api.plauth):
423 t = site['site_id'], Site(self, site)
429 Create a dictionary of node objects keyed by node ID
431 def get_nodes(self, api):
433 for node in api.plshell.GetNodes(api.plauth):
434 t = node['node_id'], Node(self, node)
439 Create a dictionary of node objects keyed by node ID
441 def get_ifaces(self, api):
443 for iface in api.plshell.GetInterfaces(api.plauth):
444 t = iface['interface_id'], Iface(self, iface)
449 Create a dictionary of slicetag objects keyed by slice tag ID
451 def get_slice_tags(self, api):
453 for tag in api.plshell.GetSliceTags(api.plauth):
454 t = tag['slice_tag_id'], Slicetag(tag)
459 Return a Slice object for a single slice
461 def get_slice(self, api, hrn):
462 slicename = hrn_to_pl_slicename(hrn)
463 slice = api.plshell.GetSlices(api.plauth, [slicename])
465 self.slice = Slice(self, slicename, slice[0])